Holographic model for light quarks in anisotropic hot dense QGP with external magnetic field

TL;DR

This paper develops a holographic model to study light quarks in an anisotropic, hot, dense QGP under magnetic fields, revealing phase diagram shifts, inverse magnetic catalysis, and conductivity behaviors near critical points.

Contribution

It introduces a novel five-dimensional anisotropic holographic model incorporating magnetic fields and chemical potential to analyze QGP properties.

Findings

Magnetic field influences the phase diagram and critical points.

Inverse magnetic catalysis observed for light quarks.

Conductivity behavior varies with quark mass and temperature.

Abstract

We present a five-dimensional twice anisotropic holographic model supported by Einstein-dilaton-three-Maxwell action describing light quarks. The first of the Maxwell fields provides finite chemical potential. The second Maxwell field serves for anisotropy, characterizing spatial anisotropy of the QGP produced in heavy-ion collisions (HIC). The third Maxwell field is related to a magnetic field that appears in HIC. The dependence of the 5-dim black hole solution and confinement/deconfinement phase diagram on this magnetic field is considered. The effect of the inverse magnetic catalyses for light quarks phase diagram is obtained. Positions of critical end points are found. We also study the behavior of the conductivity for light quarks in both isotropic and anisotropic cases and show that behaviour of the conductivity near critical points essentially depend on quark masses, meanwhile at high temperature they are similar.